Over many decades as the organization name changed rma rtma retma eia so was the name of the code. Reading the resistor from left to right the first two color bands represent significant digits the third band represents the decimal multiplier and the fourth band represents the tolerance. Resistor Color Codes And Chart For 3 4 5 And 6 Band Resistor Color Code Chart How To Identify Resistance Color Resistor Color Code 4 Band 5 Band And 6 Band Resistors 4 band resistor color code identification. Resistor color ring chart . We have presented 3 charts below which are exactly resistor color code charts for 4 band 5 band and 6 band resistors respectively. Red yellow orange black brown 243 ohms 1 precision 5 band resistor yellow violet gold gold yellow 47 ohms 5 this resistor is calculated with the 4 band rule the yellow band is ignored. In the 1920s citation needed...